6LoWPAN is an IPv6 protocol that allows communication over low power wireless personal area networks (WPANs). It enables smaller devices with limited processing power and battery life to communicate using IPv6. 6LoWPAN uses the IEEE 802.15.4 standard and creates an IP-enabled mesh network of edge routers and sensor nodes to transmit data between small IoT devices and the broader internet or cloud platforms. It provides secure, low-cost communication for applications like home automation and industrial monitoring.